<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        /*通配符选择器*/
        *{
            color: red;
        }
    </style>
</head>
<body>
    <div>我的</div>
    <span>我的</span>
    <ul>
        <li>还是我的</li>
    </ul>
</body>
</html>